[en] The invention is attributed to elements of devices for plasma obtaining and investigation and it can be used when creating thermonuclear synthesis facilities. The invention is aimed at the decrease of plasma contamination with heavy impurities and increase of diaphragm operation resource. It is achieved by the following: the surface of sector elements turned to plasma is manufactured of a porous refractory material, the pores of which are filled with solid phase filler with the value of sputtering coefficient-atomic weight product similar to a refractory material. Porous layer is formed by texturized-thread refractory structure. The surface of sector elements turned to plasma forms an angle with diaphragm axis, the value of which is of one order with the value of the ratio of longitudinal rate of charged particles in the boundary plasma layer and their transverse rate. Efficiency of the diaphragm suggested consists in the decrease of heavy impurity level, which enter the plasma from its surface, as a result of that, its energy losses decrease, and energy confinement time and stability of discharge increase

[en] A tokamak device containing a high vacuum discharge chamber, evacuated shell embracing the chamber and a magnetic system with a magnetic guide is described. The invention is aimed at the simplification of the design of chamber joint with the evacuated shell which embraces the chamber. The present aim is reached by manufacturing the toroidal section of the chamber in the proposed device as an allwelded shell composed of sections with equal electric resistance. Each section in the same cross section is equipped with a radial branch pipe which is hermetically and electrically conneted with the toroidal section of the discharge chamber and with a side wall of the evacuated shell which envelops vertical pillurs of the magnetic guide. The number of vertical branch pipes is a multiple of the number of magnetic quide vertial pillars

[en] A chamber for a tokamak device, containing a discharge chamber and sectioned screen, enveloping it and located inside supporting structure, is described. To compensate for radial thermal changes in the screen linear dimensions, supportina elements of supporting structure are produced in the form of self-adjusting boots. They are located along external contour of the screen transverse cross section and are supplied with movable ring supports, compressed using wedge pairs installed in the gap between the boots and screen. The presence of ring supports excludes sharp (impact) displacements of the screen sections when electrodynamical forces during working pulse are applied. The ring supports compensate for thermal chanaes in the screen linear dimensions during its cooling (heating), ensuring stable position of the last cross section on the magnetic axis and therefore excludes corrugation of plasma filament

[en] The chamber of the tokamak is described. It includes an electroconductive screen with a heated discharge chamber inside. The chamber is made of corrugated shells and connecting rings with vertical and horizontal branch pipes. To fix the spatial position of discharge chamber transverse cross section the branch pipes coaxial with the centre of transverse ring cross section are equipped with supporting dielectric elements supported against the internal surface of openings in the screen. Chamber efficiency lies in the fact that fixation of vertical branch pipes of the discharge chamber in the openings of eveloping screen permits to receive the resulting force of atmospheric pressure and electromagnetic forces caused by external fields, t.e. to exclude shock loads on insulating supporting chamber elements

[en] The structure of the DTTR vacuum system is described and its basic parameters are given. Vacuum chamber requirements are formulated and the principles of its construction are given. Thermal regimes of certain modifications of the protective screens are examined. Balance equations of the gas fluxes in the discharge chamber at different stages of the operating cycle are analyzed. The expediency of modular construction of the reactor pumpdown system is demonstrated

[en] A technique for degassing the vacuum chamber of a tokamak-type device which utilizes the heating of high vacuum tract elements with a simultaneous pumping out is described. To improve chamber's operation reliability and to reduce the duration of the period required to attain the established temperature conditions, the heating of bellows elements of the chamber is performed by repeatedly switching on induction heating up for short time intervals. The duration of the heatinq up is controlled by the value of the permissible temperature drop between bellows and ring element of the chamber as well as by pressure value in the chamber. Control of power supplied to branch pipe heaters is executed in the function of the permissible temperature drop between branch pipes and ring elements

[en] A plasma device chamber containing corrugated and smooth section with supporting elements is described. It is supporting elements are located on the both sides of chamber's equatorial plane and are made in the form of mutually perpendicular slider quides to fix the position of chamber's cross section geometric axis

[en] The discharge chamber of the tokamak device is described. It includes smooth-walled electrically closed metallic sections with branch pipes electrically connected with the chamber by the operture circuit. To decrease the forces affecting chambes walls due to the reduction of distortions from branch pipe apertures in current distribution in the chamber walls, the branch pipes are equipped with shunting rings ajoining the chamber in the aperture circuit

[en] The invention is designed to increase tokamak device compactness and to decrease operational deformations of support structure. The aim is achieved by the following: in the known tokamak device, containing a toroidal discharge chamber with enveloping electroconducting screen and support winding, the latter is manufactured in the form of coaxial annular farms. They envelope winding blocks from below and above and are joined in spaces between the blocks by queen posts. The central part of the queen posts is manufactured in the form of annular disks enveloping the chamber, the hole contours of which are fixed to adjoining surface of the chamber electroconducting screen

[en] Chamber of the T-10M Tokamak which is a modification of the T-10 tokamak is described. The invention is aimed at fixing the position of the geometric axis of chember's cross section when heating. The present aim is reached by manufacturing chamber supports in the form of elastic elements Shose complianoe duping a shift is much less than their axial compliance. One of the supports stands in the equatorial plane of the chamber and other are pairwise located on the opposite sides of the equatorial plane along the vertical axis which passes through the centre of chamber's cross section